Possibility Storm, and Arcane Laboratory

Prerequisites

• Possibility Storm on the battlefield
• Arcane Laboratory on the battlefield

Steps

1. Whenever a player casts a spell from their hand, Possibility Storm triggers, exiling that spell and causing that player to exile a different card from their library that they would normally be able to cast
2. Arcane Laboratory prevents them from casting that card or any other spells this turn

Results

• Players can't cast spells from their hand
• Lock